US 11,926,806 B2
Automatic dishwashing method
Nevena Lukic, Brussels (BE); Nilgun Esin Aksoy Abaci, Meise (BE); Patrick Firmin August Delplancke, Steenhuize-Wijnhuize (BE); and Serdar Acikalin, Brussels (BE)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Aug. 3, 2021, as Appl. No. 17/392,310.
Claims priority of application No. PCT/US2020/070351 (WO), filed on Aug. 4, 2020.
Prior Publication US 2022/0169957 A1, Jun. 2, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/33 (2006.01); A47L 15/44 (2006.01); B08B 3/08 (2006.01); B08B 3/10 (2006.01); C11D 1/66 (2006.01); C11D 3/08 (2006.01); C11D 3/10 (2006.01); C11D 3/28 (2006.01); C11D 3/32 (2006.01); C11D 3/36 (2006.01); C11D 3/386 (2006.01); C11D 3/39 (2006.01); C11D 3/395 (2006.01); C11D 7/54 (2006.01); C11D 11/00 (2006.01); C11D 17/04 (2006.01)
CPC C11D 11/0023 (2013.01) [A47L 15/4436 (2013.01); B08B 3/08 (2013.01); B08B 3/10 (2013.01); C11D 1/66 (2013.01); C11D 3/08 (2013.01); C11D 3/10 (2013.01); C11D 3/28 (2013.01); C11D 3/32 (2013.01); C11D 3/33 (2013.01); C11D 3/361 (2013.01); C11D 3/386 (2013.01); C11D 3/38609 (2013.01); C11D 3/3905 (2013.01); C11D 3/392 (2013.01); C11D 3/3951 (2013.01); C11D 17/044 (2013.01); C11D 17/045 (2013.01)] 14 Claims
 
1. A method of cleaning soiled ware in a dishwasher, using a program comprising a cleaning cycle of length t, the method comprising the step of delivering a water-soluble pouch, to water to form a wash liquor within said dishwasher, and contacting said soiled ware with said wash liquor, the pouch comprising a phosphate-free cleaning composition wherein the cleaning composition comprises loose powder and the composition comprises bleach, metal bleach catalyst and a complexing agent selected from the group consisting of methylglycine-N,N-diacetic acid (MGDA), glutamic acid-N,N-diacetic acid (GLDA), iminodisuccinic acid (IDS), citric acid, aspartic acid —N,N-diacetic acid (ASDA), their salts and mixtures thereof and wherein:
i) at least 90% by weight of the bleach catalyst is delivered into the cleaning cycle in less than 1/10 t; and
ii) at least 50% by weight of the complexing agent is delivered into the cleaning cycle later than ½, where t is considered to be the time from the moment in which the pouch is delivered into the cleaning cycle until the time when the wash liquor is drained and t is at least 10 minutes.